Gas valve



y 1955 c. LAMAR 2,707,971

GAS VALVE Filed Sept. 15, 1949 2 Sheets-Sheet 1 Unite tates Patent GASVALVE Charles C. Lamar, Chicago, Ill., assignor to HarperilivymanCompany, Chicago, Ill., a corporation of linois Application September15, 1949, Serial No. 115,788

4 Claims. (Cl. 137-5992) The present invention relates to gas valves andespecially to double gas valves, i. e., valves used with gas burnershaving two burner sections. Burners of this type are generally calleddouble burners and the two burner sections are called the main andsimmer sections.

The primary object of the present invention is to provide an improveddouble gas valve including means for supplying a large as well asregulatable quantity of gas to both burner sections, a large andregulatable quantity of gas to the simmer section only, and a smallerand predetermined quantity of gas to the simmer section only, thepredetermined quantity being adjustable through the valve stem which ismade hollow for this purpose.

in brief, the double gas valve of the present invention includes a bodyhaving angularly spaced apart transversely extending inlet and outletpassageways, another outlet passageway, and a branch inlet passagewayincluding a portion spaced axially and angularly from said firstmentioned transversely extending passageways. The valve includes also arotatable control member having an axial passageway including larger andsmaller diameter portions, of which the larger portion communicates withsaid other outlet passageway, and a pair of transversely extendingangularly spaced apart passageways communicating with the largerdiameter portion of said axial passageway and aligned with said inletand first mentioned outlet passageways in one position of the memher.The control member has also another transversely extending passagewaycommunicating with the smaller diameter portion ofsaid axial passagewayand adapted to be aligned with the said portion of the branch inletpassageway in another position of said member, and gas flow regulatingstem adjustment means are provided in said smaller diameter portion ofthe member for access from the exterior of said member forpredetermining the flow of gas in said other position of the member.valve of the present invention includes features which are disclosed andclaimed in my copending application Serial No. 709,466, filed November13, 1946 (now Patent No. 2,632,469, issued March 24', 1953).

Other objects and advantages of the present invention will becomeapparent from the ensuing description of a preferred embodiment of thegas valve, in the course of which reference is had to the accompanyingdrawings in which:

Fig. 1 is a bottom plan view of a gas valve embodying the presentinvention. The valve is illustrated in its off position and because ofthe limitations of space, only part of the valve handle has been shown;

Fig. 2 is an axial cross sectional view of the gas valve with the valvein its so-called low simmer position. The section is one in the plane ofthe drawing, i. e., a horizontal plane;

Figs. 3 to 7, inclusive, are fragmentary inverted vertical crosssectional views taken along the lines 373 7 of Fig. 2 and with the valvein its oft, low simmer, t'ull simmer, low turn down, and full onpositions, as indicated in the drawing; and

The

Z,77,9?l Patented May it), 1955 Figs. 3-A to 7-A are flat developmentsof the valve chamber and control member surfaces in the positionscorresponding to those in which these are shown in Figs. 3 to 7,inclusive. By fiat developments are meant the surface developed byrolling the surfaces of the valve chamber and control member upon aplane surface. The control member surface is shaded and the chambersurface is unshaded.

Referring first more particularly to Figs. 1 and 2, the double gas valveof the present invention is indicated as a whole by reference characterit It comprises a valve body 12 having control member receiving chamber13 with a conical inner surface 14 and within which is mounted arotatable control member 16 which may be and is illustrated as a taperedor conical plug.

Gas is supplied to the valve through a main gas inlet passageway 18formed in an exteriorly threaded boss 21) on the valve body and adaptedfor attachment to the usual gas supply main (not shown). The valve bodyis also provided with a pair of longitudinally extending spaced apartexteriorly threaded bosses 22 and 24 which are drilled to form gasoutlet passageways 26 and 28, respectively, through which gas issupplied to the simmer and main burner sections, respectively, of adouble gas burner (not shown). Passageway 26 communicates directly withthe chamber 13 in the valve body, which is open to an axial passageway3% in the valve plug. Passageway 28 communicates with the chamber 13through a transversely extending passageway 32. The latter is generallyradial and after being formed as by drilling, its outer end is closed asby a plug 34. Adjustably mounted hoods 36 and 38, provided with orificesand cooperating with fixed needle valves secured to the valve body (notshown, but which may be or" conventional construction), are secured tothe outer ends of bosses 22 and 24 to provide nozzles through which gasis supplied to both burner sections when the valve is in its full onposition and to the simmer section in the full simmer position.

The control member 16 is provided with the previously referred to axialpassageway 30 and a pair of co-planar angularly spaced apart andgenerally radially disposed passageways 4t) and 42 leading from a largerdiameter portion Ell-A of the axial passageway to the surface of theplug. These are readily drilled in the plug when the plug has beenplaced in the valve body and when the plug is in its full on position sothat they register with the gas inlet and the outlet passageways 13 and32, respectively, in the valve body as best illustrated in 7. As may benoted from this illustration, the drilling while generally radial is notexactly so.

The control member, in accordance with another feature of the presentinvention, is provided with a further and smaller transverse passageway44, which is both axially and angularly spaced from the pair ofco-planar passageways and which also leads to the exterior of the valveplug, but preferably from a smaller diameter portion 30-8 of the axialpassageway 30 in the valve plug. A low and predeterminable quantity ofgas is supplied to the simmer burner section only in the low simmerposition of the valve through the passageway 44. The quantity of gasthus supplied is adjustable by stem adjustment means 46 mounted in theportion 30-3 of'the valve plug and accessible through the hollow 48 inthe valve stem 50. This stem adjustment means may take various forms,but is illustrated as being of the type disclosed and claimed in theco-pending applications of Philip S. Harper, Serial No. 576,673, filedFebruary 7, 1945 (now Patent No. 2,590,535, granted March 25,1952), andVincent C. Peterson, Serial No. 600,795, tiled lune 21, 1945 (now PatentNo. 2,590,569, granted March 25, 1952).

The stem adjustment means comprises an auxiliary valve 3 providinginsert 52 and a rotatably adjustable secondary valve member 54 having aslot 56 at its outer end, whereby it is readily accessible foradjustment through the hollow stem as by a small screwdriver. When thevalve member 54 is rotated, the quantity of gas flowing to the auxiliarypassageway 30 and thence to the simmer burner section is adjusted bycontrol of the effective size of an orifice including an aperture 58 inthe insert and a cooperating passageway 6th in valve 54 communicatingwith the interior of the valve plug through an axial passageway 62. Theaperture 58 in the insert is aligned with an an nular exterior recess 63communicating with the passageway 44. The stem adjustment means isprovided with a seal 64 near its outer end preventing escape of gastherethrough. The seal is comprised of a lubricant filled annular groove66 in the valve member and a cooperating annular indentation 68 in thethin outer wall portion 70 of insert 52. The stem adjusting means ispreferably preassembled in the form in which it is shown and theninserted into the portion 30-B of the axial passageway in the valveplug.

The control member includes also a transverse auxiliary passageway 72,the purpose of which is to provide a final even turn down of gas to bothburners when the valve is operated from its full on position to itssimmer position.

The valve body has, in addition to the outlets and main gas inlet 18, abranch gas inlet passageway cooperatively associated with the passageway44 in the valve plug and forming part of a system of passageways forsupplying the predeterminable small quantity of gas to the simmer burnersection in the low simmer position of the valve. The branch inletpassageway comprises, in effect, a number of portions including arecess'like portion 74 drilled in a boss 75 in the valve body, a shortand small diam eter passageway 76 interconnecting portion 74 with themain gas inlet passageway 18, and a passageway 78 constituting a portionof the branch inlet passageway that is axially spaced from the plane ofthe remaining passageways and which communicates with the passageway 44in the valve plug in the low simmer position of the valve, asillustrated in Figs. 2, 4 and 4A.

The recess 74 can be drilled readily in the boss and provides access fordrilling the passageways 7s and 78, the latter being drilled with thevalve plug in its low simmer position and being continued into the valveplug to form the passageway 44. After the drilling operations have beencompleted, the recess 74 can be closed by a cap 80.

The valve plug is held in the valve chamber by a spring 82, one end ofwhich abuts against a shoulder on the plug and the other against an endor closure plate 84 suitably secured as by screws to the valve body. Theoperation of the valve by the user is facilitated by a combined positiondetermining and indicating detent disc 86 cooperatively associated withthe end plate in a known manner.

The operation of the valve will now be described in connection withFigs. 3 to 7 and 3-A to 7A, which illustrate various operating positionsof the valve.

In the off position, illustrated in Figs. 3 and 3-A, the valve plug 16occupies a position in which it closes the main gas inlet passageway 18and the branch inlet passageway 78 so that no gas is supplied either tothe main or simmer sections of the burner. in this position the valvestem and its operating handle may occupy a position indicated by thearrow A.

The low simmer position of the valve is indicated in Figs. 4and 4-A. Inthis position the plug is located counterclockwise of its off position,as again indicated by the position of the arrow A. In this position gasis supplied to the simmer section only of the burner and at aratepredetermined by adjustment of the stem adjustment means 46. The gasflows to the simmer section of the burner from the main gas inletpassageway 18 through the branch inlet passageway portions 76, '74 and73, the passageway 44 in the valve plug, the stem adjustment means, theaxial passageway 30, chamber 13 and the simmer burner outlet passageway26.

In the full simmer position, illustrated in Figs. 5 and 5-A, the valveplug is moved to the position indicated by the arrow A. In this positiongas is supplied to the simmer section only at a high rate through thenow substantially aligned passageways 18 and 42, the other transversepassageways in the plug being closed.

In the full on position of the valve, the plug is moved to the positionagain indicated by the arrow A in Fig. 7. At this time, as readilyascertainable in Figs. 7 and 7-A, the main inlet passageway is fullyaligned with passageway 40 in the plug and passageway 42 in the plug isfully aligned with the main burner outlet passageway portion 32. As aresult gas is supplied at a high rate to the main and simmer burnersections.

A regulatable supply of gas to both the main and simmer burner sectionsand to the simmer section only is obtainable by rotating the valve plugto various positions intermediate the full on and simmer positions andintermediate the low and full simmer positions, respectively. Theauxiliary passageway 72 gives a final even turn-down when the valve plugis operated from its full on to its simmer position. It prevents thecutting down of the gas supply below a minimum at which the flames atthe burners might readily be extinguished.

From the foregoing detailed description of the invention it may be notedthat it provides an easily constructed and elficiently operable doublegas valve enabling gas to be supplied in various quantities andselectively to the burner sections of a double burner.

While the present invention has been described in detail in conjunctionwith illustrative embodiments thereof, it should be understood thatthese details are not intended to be limitative of the invention exceptin so far as set forth in the accompanying claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. A double gas valve having a body with angularly spaced aparttransversely extending inlet and outlet passageways, another outletpassageway, and a branch inlet passageway including a portion spacedaxially and angularly from said first mentioned transversely extendingpassageways, and a rotatable valve member having an axial passageway oflarger and smaller diameter portions, of which the larger portioncommunicates with said other outlet passageway, and a pair oftransversely extending passageways communicating with the largerdiameter portion of said axial passageway and aligned with said inletand first mentioned outlet passageways in one position of the member,said member having also another transversely extending passagewaycommunicating with the smaller diameter portion of said axial passagewayand adapted to be aligned with said portion of the branch inletpassageway in another posi= tion of said member, and gas flow regulatingstem adjustment means in said smaller diameter portion accessible fromthe exterior of said member for predetermin- L ing the flow of gas insaid other position of the member.

2. A double valve for double gas burners of the, type including main andsimmer burner sections, including in combination, a valve body havingangularly spaced apart main and branch inlet passageways, meansincluding a movable valve member having an axial passageway, a hollowstem communicating with said passageway, auxiliary valve meansadjustable through the stem and a transverse passageway connecting theexterior of said means with said branch inlet passageway for supplying alow but regulatable quantity of gas to the simmer burner section in oneposition of the valve, means including said axial passageway and anothertransverse from said first mentioned passageway and communicating withsaid main and inlet passageway for supplying a larger quantity of gas tosaid simmer burner section in another position of the member, and meansincluding said axial passageway, said other transverse passageway and athird transverse passageway angularly spaced from the otherscommunicating with said main inlet passageway for supplying a largerquantity of gas to both burner sections in a further position of saidmember.

3. A gas valve including a body having a valve chamber, angularly andaxially displaced main and branch inlets leading to said chamber, and amovable valve member having an axial passageway and transversepassageways leading from the exterior of the member to said axialpassageway, said transverse passageways being angularly and axiallydisplaced and so located that gas is supplied to the axial passagewayselectively through said main inlet and one transverse passageway insaid member or said branch inlet and the other transverse passageway indifferent positions of said movable valve member, and said valve memberhaving stem adjustmerit gas flow regulating means associated with saidother transverse passageway for predetermining the flow of gas from saidother transverse passageway to said axial passageway.

4. A double gas valve for use with double gas burners of the type havingmain and simmer burner sections, including in combination, a valve bodyhaving a control member receiving chamber, a control member rotatablymounted in said chamber, said member having an axially disposedpassageway open to said chamber and a smaller diameter axial passagewayopen to the exterior of the valve through the valve stem, stemadjustment gas flow regulating means in said smaller diameterpassageway, a pair of coplanar angularly spaced apart generally radiallydisposed passageways leading from said axial passageway to the surfaceof said member, and a passageway axially and angularly spaced from saidpair of passageways leading from the exterior of the member to said stemadjustment means, said valve body having a pair of outlet passagewaysadapted to supply gas to the simmer and main burner sections of theburner, respectively, the simmer burner section outlet passagewaycommunicating with said axial passageway and the main burner sectionoutlet passageway communicating with the member surface in the plane ofsaid coplanar passageways, said valve body having also a main gas inletpassageway communicating with the member surface in said plane, and abranch gas inlet communicating with the member surface at a pointangularly and axially displaced from said main gas inlet, the saidgenerally radially disposed passageways in said member and thepassageways in the valve body communicating with the member surfacebeing so arranged that in one position the member closes both the mainand branch gas inlet passageways, in a second position gas is suppliedonly to the simmer burner section outlet passageway solely through saidbranch gas inlet and stem adjustment means, in a third position gas issupplied only to the simmer section through said main gas inlet and saidfirst coplanar passageway, and in a fourth position gas is supplied fromthe main gas inlet to said axial passageway through the second of saidcoplanar passageways and from said axial passageway to the simmer burnersection outlet passageway and also to the main burner section outletpassageway through said first coplanar passageway.

References Cited in the file of this patent UNITED STATES PATENTS2,113,027 Kindl et al. Apr. 5, 1938 2,162,231 Schoenberger June 13, 19392,249,982 Rutherford July 22, 1941 2,257,886 Mueller Oct. 7, 19412,299,665 Turner Oct. 20, 1942

